The POP3 Connection stores connect and logon properties for the email server protocol POP3. The POP3 protocol is used to recieve emails. Later it has been superseded by IMAP but still used in some places. The POP3 Connection is used in the Email Trigger.
Connection > POP3 > Main settings tab
See Connection > SMTP > Main settings for more details.
Connection > POP3 > Authentication tab
See Connection > SMTP > Authentication for more details.
Default settings for some servers:
Office 365
Main settings
Address: outlook.office365.com
Port: 995
Encryption
Cryptographic protocol: SSL